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Finding the Fourth Proportional to 74,893, 112,289.58 and 30,507.88

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Solution

The fourth proportional to 74,893, 112,289.58 and 30,507.88 is: 45,741.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,893 : 112,289.58 = 30,507.88 : x
  2. Step 2: Convert to fraction form
    74,893/112,289.58 = 30,507.88/x
  3. Step 3: Cross multiply
    74,893x = 112,289.58 × 30,507.88
  4. Step 4: Simplify right side
    74,893x = 3,425,717,031.89
  5. Step 5: Solve for x
    x = 3,425,717,031.89/74,893
  6. Step 6: Final answer
    x = 45,741.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.